Mark Hansen wrote:
On 5/4/2005 08:20, Dave Butler wrote:

Marty from Sunny Florida wrote:

The sky was clear, and when I got my pre-flight briefing, the temp
was 26
and dew point 16. It was unseasonably cool and very dry for Florida. At
altitude, I knew the air had almost no moisture, but on the way up,
we did
have a typical hazy layer.


Temp 26 and dewpoint 16 puts you well outside the icing region on this
chart:

http://www.ez.org/carb_ice.htm


I assumed the temperatures provided by the original poster were in
centigrade. That puts the temp at 79 deg F and the dew point at 61 deg F.

Assuming 2 deg C drop per thousand feet, that puts the temperature
at 57 deg F and the dew point at 35 deg F. Very close to the blue
"Icing at glide and cruise power" band.

You're right. I did the unit conversion correctly on one axis, but somehow
muffed the other axis. Thanks.